National Storage Affiliates Trust
US ˙ NYSE ˙ US6378701063

SecurityNSA / National Storage Affiliates Trust
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership1,031,522 shares
Latest Disclosed Value $ 38,929,641
Citadel Advisors Llc ownership in NSA / National Storage Affiliates Trust

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 1,031,522 shares of National Storage Affiliates Trust (US:NSA) valued at $38,929,640 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,446,088 shares of National Storage Affiliates Trust. This represents a change in shares of -28.67% during the quarter. The current value of the position is $43,705,587 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (NSA) in the form of stock options. The firm currently holds call options representing 165,200 of underlying shares valued at $6,234,648 USD and put options representing 5,800 of underlying shares valued at $218,892 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

NSA / National Storage Affiliates Trust Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 1,031,522 -414,566 -28.67 38,930 -4.57 0.0055
2026-02-17 2025-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 1,446,088 1,079,060 294.00 40,794 267.81 0.0061
2025-11-14 2025-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 367,028 -912,631 -71.32 11,092 -72.91 0.0017
2025-08-14 2025-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 1,279,659 462,569 56.61 40,936 27.16 0.0071
2025-05-15 2025-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 817,090 598,378 273.59 32,193 288.29 0.0061
2025-02-14 2024-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 218,712 5,762 2.71 8,291 -19.22 0.0014
2024-11-14 2024-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 212,950 -38,446 -15.29 10,264 -0.95 0.0020
2024-08-14 2024-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 251,396 -108,227 -30.09 10,363 -26.42 0.0021
2024-05-15 2024-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 359,623 327,521 1,020.25 14,083 958.00 0.0027
2024-02-14 2023-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 32,102 10,322 47.39 1,331 92.62 0.0003
2023-11-14 2023-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 21,780 -229,492 -91.33 691 -92.10 0.0001
2023-08-14 2023-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 251,272 191,368 319.46 8,752 249.76 0.0018
2023-05-15 2023-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 59,904 -347,013 -85.28 2,503 -82.98 0.0006
2023-02-14 2022-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 406,917 -73,850 -15.36 14,698 -26.48 0.0034
2022-11-14 2022-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 480,767 190,603 65.69 19,990 37.60 0.0046
2022-08-15 2022-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 290,164 53,613 22.66 14,528 -2.14 0.0037
2022-05-16 2022-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 236,551 -209,324 -46.95 14,846 -51.88 0.0031
2022-02-14 2021-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 445,875 155,018 53.30 30,854 100.95 0.0063
2021-11-15 2021-09-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 290,857 -42,108 -12.65 15,354 -8.80 0.0032
2021-08-16 2021-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 332,965 65,041 24.28 16,835 57.35 0.0038
2021-05-21 2021-03-31 13F/A-1 NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 267,924 87,126 48.19 10,699 64.25 0.0026
2021-05-17 2021-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 267,924 87,126 10,699 0.0026
2021-02-16 2020-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 180,798 101,208 127.16 6,514 150.15 0.0017
2020-11-16 2020-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 79,590 69,797 712.72 2,604 826.69 0.0007
2020-08-14 2020-06-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 9,793 -38,482 -79.71 281 -80.34 0.0001
2020-05-15 2020-03-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 48,275 48,275 1,429 0.0006
2020-02-14 2019-12-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 0 -254,422 -100.00 0 -100.00
2019-11-14 2019-09-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 254,422 74,430 41.35 8,490 62.99 0.0040
2019-08-14 2019-06-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 179,992 -1,351 -0.74 5,209 0.75 0.0024
2019-05-15 2019-03-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 181,343 79,563 78.17 5,170 91.91 0.0026
2019-02-14 2018-12-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 101,780 5,968 6.23 2,694 10.55 0.0015
2018-11-13 2018-09-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 95,812 14,974 18.52 2,437 -2.17 0.0011
2018-08-14 2018-06-30 13F/A-1 NATIONAL STORAGE AFFILIATES Cmn 637870106 80,838 22,603 38.81 2,491 70.50 0.0012
2018-08-10 2018-06-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 80,838 22,603 2,491
2018-05-14 2018-03-31 13F/A-1 NATIONAL STORAGE AFFILIATES Cmn 637870106 58,235 20,512 54.38 1,461 42.12 0.0008
2018-05-11 2018-03-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 58,235 20,512 1,461
2018-02-09 2017-12-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 37,723 37,723 1,028 0.0006
2017-11-09 2017-09-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 0 -13,307 -100.00 0 -100.00
2017-08-11 2017-06-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 13,307 -103,436 -88.60 308 -88.96 0.0003
2017-05-12 2017-03-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 116,743 73,634 170.81 2,790 193.38 0.0025
2017-02-10 2016-12-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 43,109 -2,580 -5.65 951 -0.52 0.0010
2017-01-31 2016-09-30 13F/A-1 NATIONAL STORAGE AFFILIATES Cmn 637870106 45,689 -250,430 -84.57 956 -84.49 0.0010
2016-11-10 2016-09-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 45,689 956
2017-01-31 2016-06-30 13F/A-1 NATIONAL STORAGE AFFILIATES Cmn 637870106 296,119 296,119 0.00 6,165 0.0069
2016-08-12 2016-06-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 296,119 6,165
2017-01-31 2016-03-31 13F/A-1 NATIONAL STORAGE AFFILIATES Cmn 637870106 0 -18,990 -100.00 0 -100.00
2017-01-31 2015-12-31 13F/A-1 NATIONAL STORAGE AFFILIATES Cmn 637870106 18,990 -353,152 -94.90 325 -93.55 0.0004
2016-02-12 2015-12-31 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 18,990 325
2015-11-16 2015-09-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 372,142 -124,733 -25.10 5,042 -18.16 0.0049
2015-08-14 2015-06-30 13F NATIONAL STORAGE AFFILIATES Cmn 637870106 496,875 496,875 6,161 0.0054
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 165,200 342.90 6,235 492.59 n/a n/a n/a
2026-02-17 2025-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 37,300 245.37 1,052 222.70 n/a n/a n/a
2025-11-14 2025-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 10,800 10.20 326 4.15 n/a n/a n/a
2025-08-14 2025-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 9,800 -32.41 314 -45.18 n/a n/a n/a
2025-05-15 2025-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 14,500 34.26 571 39.61 n/a n/a n/a
2025-02-14 2024-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 10,800 2.86 409 -19.17 n/a n/a n/a
2024-11-14 2024-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 10,500 -58.33 506 -51.25 n/a n/a n/a
2024-08-14 2024-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 25,200 8.15 1,039 13.82 n/a n/a n/a
2024-05-15 2024-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 23,300 -40.41 912 -43.74 n/a n/a n/a
2024-02-14 2023-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 39,100 65.68 1,621 116.42 n/a n/a n/a
2023-11-14 2023-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 23,600 87.30 749 71.00 n/a n/a n/a
2023-08-14 2023-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 12,600 162.50 439 119.00 n/a n/a n/a
2023-05-15 2023-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 4,800 -15.79 201 -2.44 n/a n/a n/a
2023-02-14 2022-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 5,700 -56.15 206 -62.11 n/a n/a n/a
2022-11-14 2022-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 13,000 28.71 541 6.92 n/a n/a n/a
2022-08-15 2022-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 10,100 -6.48 506 -25.37 n/a n/a n/a
2022-05-16 2022-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 10,800 -22.30 678 -29.52 n/a n/a n/a
2022-02-14 2021-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 13,900 962 n/a n/a n/a
2022-03-11 2021-09-30 13F/A NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 0 0 n/a n/a n/a
2021-08-16 2021-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 13,100 -53.87 662 -41.62 n/a n/a n/a
2021-05-21 2021-03-31 13F/A NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 28,400 -41.68 1,134 -35.38 n/a n/a n/a
2021-05-17 2021-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 28,400 1,134 n/a n/a n/a
2021-02-16 2020-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 48,700 31.62 1,755 45.04 n/a n/a n/a
2020-11-16 2020-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Call 37,000 96.81 1,210 124.49 n/a n/a n/a
2020-08-14 2020-06-30 13F NATIONAL STORAGE AFFILIATES Cmn Call 18,800 168.57 539 160.39 n/a n/a n/a
2020-05-15 2020-03-31 13F NATIONAL STORAGE AFFILIATES Cmn Call 7,000 7.69 207 -5.48 n/a n/a n/a
2020-02-14 2019-12-31 13F NATIONAL STORAGE AFFILIATES Cmn Call 6,500 219 n/a n/a n/a
2019-08-14 2019-06-30 13F NATIONAL STORAGE AFFILIATES Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F NATIONAL STORAGE AFFILIATES Cmn Call 8,800 251 n/a n/a n/a
2017-01-31 2016-03-31 13F/A NATIONAL STORAGE AFFILIATES Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-31 2015-12-31 13F/A NATIONAL STORAGE AFFILIATES Cmn Call 600 10 n/a n/a n/a
2016-02-12 2015-12-31 13F NATIONAL STORAGE AFFILIATES Cmn Call 600 10 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 5,800 -47.75 219 -30.35 n/a n/a n/a
2026-02-17 2025-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 11,100 24.72 313 16.79 n/a n/a n/a
2025-11-14 2025-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 8,900 -11.88 269 -17.03 n/a n/a n/a
2025-08-14 2025-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 10,100 -34.42 323 -46.70 n/a n/a n/a
2025-05-15 2025-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 15,400 0.65 607 4.48 n/a n/a n/a
2025-02-14 2024-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 15,300 39.09 580 9.43 n/a n/a n/a
2024-11-14 2024-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 11,000 0.92 530 18.04 n/a n/a n/a
2024-08-14 2024-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 10,900 -16.15 449 -11.79 n/a n/a n/a
2024-05-15 2024-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 13,000 -31.94 509 -35.73 n/a n/a n/a
2024-02-14 2023-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 19,100 -23.29 792 0.25 n/a n/a n/a
2023-11-14 2023-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 24,900 -36.15 790 -41.83 n/a n/a n/a
2023-08-14 2023-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 39,000 212.00 1,358 160.15 n/a n/a n/a
2023-05-15 2023-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 12,500 -0.79 522 14.73 n/a n/a n/a
2023-02-14 2022-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 12,600 455 n/a n/a n/a
2022-08-15 2022-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 3,300 -45.90 207 -50.95 n/a n/a n/a
2022-02-14 2021-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 6,100 422 n/a n/a n/a
2022-03-11 2021-09-30 13F/A NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 0 0 n/a n/a n/a
2021-08-16 2021-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 5,300 -1.85 268 24.07 n/a n/a n/a
2021-05-21 2021-03-31 13F/A NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 5,400 -47.57 216 -41.78 n/a n/a n/a
2021-05-17 2021-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 5,400 216 n/a n/a n/a
2021-02-16 2020-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 10,300 35.53 371 49.00 n/a n/a n/a
2020-11-16 2020-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN Put 7,600 -34.48 249 -25.00 n/a n/a n/a
2020-08-14 2020-06-30 13F NATIONAL STORAGE AFFILIATES Cmn Put 11,600 332 n/a n/a n/a
2019-02-14 2018-12-31 13F NATIONAL STORAGE AFFILIATES Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-11-13 2018-09-30 13F NATIONAL STORAGE AFFILIATES Cmn Put 15,700 399 n/a n/a n/a
2017-11-09 2017-09-30 13F NATIONAL STORAGE AFFILIATES Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-11 2017-06-30 13F NATIONAL STORAGE AFFILIATES Cmn Put 9,500 220 n/a n/a n/a
2016-05-13 2016-03-31 13F NATIONAL STORAGE AFFILIATES Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-31 2015-12-31 13F/A NATIONAL STORAGE AFFILIATES Cmn Put 1,500 -31.82 26 -13.33 n/a n/a n/a
2016-02-12 2015-12-31 13F NATIONAL STORAGE AFFILIATES Cmn Put 1,500 26 n/a n/a n/a
2015-11-16 2015-09-30 13F NATIONAL STORAGE AFFILIATES Cmn Put 2,200 1,000.00 30 1,400.00 n/a n/a n/a
2015-08-14 2015-06-30 13F NATIONAL STORAGE AFFILIATES Cmn Put 200 2 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.